Macroscopic superposition and entanglement for displaced thermal fields induced by a single atom

doi:10.1103/PHYSREVA.75.032114

Title: Macroscopic superposition and entanglement for displaced thermal fields induced by a single atom

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Abstract

We show that a cavity field can evolve from an initial displaced mixed thermal state to a macroscopic superpositions of displaced thermal states via resonant interaction with a two-level atom. As a macroscopic system (meter) is really in a mixed state before coupling with the microscopic system at some temperature, our result is important for studying the quantum measurement problem and decoherence under real conditions. For the two-mode case, entanglement of displaced thermal states between the modes can be obtained.

Authors:

Zheng, Shi-Biao ^[1]

Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002 (China)

Publication Date:: Thu Mar 15 00:00:00 EDT 2007

OSTI Identifier:: 20982245

Resource Type:: Journal Article

Resource Relation:: Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.75.032114; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)

Country of Publication:: United States

Language:: English

Subject:: 74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; COUPLING; INFORMATION THEORY; INTERACTIONS; IONS; MIXED STATE; PHOTON-ATOM COLLISIONS; QUANTUM ENTANGLEMENT; TRAPPING

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                    Zheng, Shi-Biao. Macroscopic superposition and entanglement for displaced thermal fields induced by a single atom.  United States: N. p., 2007. 
        Web.  doi:10.1103/PHYSREVA.75.032114.

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                    Zheng, Shi-Biao. Macroscopic superposition and entanglement for displaced thermal fields induced by a single atom.  United States.  doi:10.1103/PHYSREVA.75.032114.

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                    Zheng, Shi-Biao. Thu .  
        "Macroscopic superposition and entanglement for displaced thermal fields induced by a single atom".  United States.  
        doi:10.1103/PHYSREVA.75.032114.

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@article{osti_20982245,

  title        = {Macroscopic superposition and entanglement for displaced thermal fields induced by a single atom},

  author       = {Zheng, Shi-Biao},

  abstractNote = {We show that a cavity field can evolve from an initial displaced mixed thermal state to a macroscopic superpositions of displaced thermal states via resonant interaction with a two-level atom. As a macroscopic system (meter) is really in a mixed state before coupling with the microscopic system at some temperature, our result is important for studying the quantum measurement problem and decoherence under real conditions. For the two-mode case, entanglement of displaced thermal states between the modes can be obtained.},

  doi          = {10.1103/PHYSREVA.75.032114},

  journal      = {Physical Review. A},

  number       = 3,

  volume       = 75,

  place        = {United States},

  year         = {Thu Mar 15 00:00:00 EDT 2007},

  month        = {Thu Mar 15 00:00:00 EDT 2007}

}

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DOI: 10.1103/PHYSREVA.75.032114

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